I went back and checked and I inserted the link in the wrong spot the time it didn't work. I edited it so the [video] showed on each end of the link and then it worked. I initially had [video, and then the link, followed by ][video], which, of course, did not work. So, one has to be careful. But, it is good.

Yes, and, when you click the video button the cursor seems to be in the correct position so that if you paste it will come out correctly. But, in spite of that, I managed to paste the url incorrectly. Who knows how? Perhaps it was those Margaritas?